The TUSA Rescue marker and SMB (surface marker buoy) is an invaluable tool for any diver, no matter your experience. An SMB shows that a diver is down and alerts the surface exactly where you are in the water.FEATURES
> - Safety tube that inflates with regulator air.
> - Check valve prevents air from escaping.
> - Inflator/Deflator valve for easy operation.
> - Dimension (L x W) - 71” × 5” in / 1800 × 135 mm